Geometry
Angles, areas and shapes you can drag.
- 23Angle ChasingreadyHunt down a missing angle one clue at a time: straight lines, triangles, parallel lines, polygons and circles all leave footprints.
0% - 24TrianglesreadyFind the area of any triangle, meet the special right triangles, and put the Pythagorean Theorem and angle bisectors to work.
0% - 25QuadrilateralsreadySquares, rectangles, rhombuses, parallelograms and trapezoids: learn one area formula for each, then cut any four-sided shape into triangles.
0% - 26CirclesreadyMeasure circles: unroll the edge, slice the pizza, and find the area of every curvy shaded region.
0% - 27Similar TrianglesreadySame shape, different size: spot hidden similar triangles, use their side ratios, and square the ratio for areas.
0% - 28Area and Length of Complex ShapesreadyHexagons, octagons and odd-looking shapes: cut them into pieces you know, or add and subtract pieces, to find any area or length.
0% - 293D GeometryreadyBuild, spin, unfold and slice solids to find their volumes, surface areas and hidden diagonals.
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